Hardeep Singh Nijjar was shot dead by unidentified gunmen outside a Sikh temple on June 18 in a Vancouver suburb. India had designated him as a "terrorist" three years earlier.
Here's a list of diplomatic and trade actions taken by the two nations so far:
* Canada paused talks on a proposed trade treaty with India, a Canadian official said on Sept. 1, an unexpected move that came about three months after both countries said they planned to seal an initial pact this year.
* Indian Prime Minister Narendra Modi conveyed strong concerns about Sikh separatist protests in Canada to Prime Minister Justin Trudeau on the sidelines of a G20 summit in New Delhi on Sept. 10.
* Canada postponed a trade mission to India planned for October led by Trade Minister Mary Ng, a spokesperson for the minister said on Sept. 15. Canada's decision to halt trade treaty talks and postpone the mission was due to concerns surrounding the murder, a Canadian source told Reuters.
* Trudeau told parliament on Sept. 18 that Canada was "actively pursuing credible allegations" linking Indian government agents to the killing of Nijjar, a Canadian citizen campaigning for the creation of an independent Sikh homeland carved out of India.
* India dismissed Trudeau's assertion as "absurd" on Sept. 19. Both countries expelled a diplomat in tit-for-tat moves, with Canada throwing out India's top intelligence officer in the country while India expelled his Canadian counterpart.
* India urged its citizens in Canada to exercise caution in a statement on Sept. 20, as the U.S., Australia and Britain expressed concerns about the issue.
* India's JSW Steel Ltd is slowing down the process to buy a stake in the steelmaking coal unit of Canada's Teck Resources, Reuters reported on Sept. 21 citing a source close to the discussions.
* India suspended issuing new visas for Canadians on Sept. 22 and asked Ottawa to reduce its diplomatic presence in India.
* Fertiliser importer Indian Potash said on Sept. 22 that it does not expect supplies of Canadian potash to be affected by the row and that it hopes to extend a contract with Canadian supplier Canpotex beyond the end of September. Canada is one of the key suppliers of potash to India.
* Canadian lentil sales to India slowed after tensions rose between the two nations, industry sources in both countries told Reuters. Canada is India's main import source of lentils, a protein-rich staple.
* India's steel secretary told reporters on Sept. 28 that Indian exports to Canada were marginal and have not been affected by the diplomatic row.
(Compiled by Shivam Patel; Editing by YP Rajesh & Simon Cameron-Moore)
